/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hive.service.cli.operation;

import org.apache.hadoop.hive.ql.QueryInfo;

import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Cache some SQLOperation information for WebUI
 */
public class QueryInfoCache extends LinkedHashMap<String, QueryInfo> {

  private final int capacity;

  public QueryInfoCache(int capacity) {
      super(capacity + 1, 1.1f, false);
      this.capacity = capacity;
  }

  @Override
  protected boolean removeEldestEntry(Map.Entry eldest) {
    return size() > capacity;
  }
}
